Improvement in paper-bag machines



`-N0. 122, O99, -Patented Dec. 25,1871.

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UNITED STATE ATENT OFFICE.

SMITHS, OF SAME PLACE.

IMPROVEMENT IN PAPER-BAG MAcHmEs.

4 Specification forming part of Letters Patent No. 122,099, dated December 26, I871.`

To all uhom t may concern.- Be it known that I, J AMEs ARKELL, of Cana- `joharie, of Montgomery county, in the State of New York, have invented an Improvement in Fasting and Folding Bag-Bottoms; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing making part of this specification.

As is well known to those skilled in the art, the bag or sack is made from a roll of material which is passed over a suitable former and its edges pasted together, so as to be delivered from said former in the shape of a tube, which is cut up into suitable lengths, or short tubes, each of which may have one end cut and folded, or creased in a peculiar manner to facilitate the subsequent operation of forming the bottom.

4To this operation of forming the bottom7 of the bag by pasting and folding over the material into the requisite shape my invention relates.

My invention has for its object to provide a means for successfully and economicallyperforming this part of the operation in the manufacture Aof square-bottomed bags or sacks from single pieces of material; and consists ina machine in which the mode of operation is such that the partially-formed sack or the prepared sack-body is carried automatically through the machine on a carrier or bed which moves always in the sameA direction, and on which 1t is successively sub' jected to the operations of mechanism or devices for applying the paste and making the folds to finish the bag-bottom, as will be hereinafter more fully explained; and my invention further consists in certain novel combinations of devices for performing the several operations by which the l bag-.bottom is completed, as will be hereinafter more fully explained.

To enable those skilled in the art to make and use my invention, I will proceed to more fully describe it, referring by letters to the accompanying drawing which make part of this application, and iu which the diagrams Nos. 1, 2, 3, 4, and 5 illustrate the different conditions of the bag during its manufacture, as I will presently more fully explain; and

nFigures l, 2, 3, 4, 5, and 6 are, respectively, a ont elevation, side view, side elevation, vertical section, skeleton View of holding mechanism, and skeleton view of folding mechanism.

In the several figures the same part of the machine is designated by the same letter of reference.

Before describing the construction and operation of the machine illustrated, I will explain by the diagrams the operations to be performed on the bag, which I think will render the specification of the machine more intelligible. At No. l of the diagrams is illustrated a partially-formed paper-sack, such as is usually manufactured by l me for putting up iiour, &c., in the condition 1n which the article is supplied tothe machine, (I

will presently describe,) and where it has first the paste or other adhesive material applied to it, as illustrated at p and `p2 p2, No. 2; next the portion'q, folded over, as seen at q2,No. 3; and

finally the portion r, folded over, as seen at r2,

No. 4; when the sack is finished, so as to present when distended or filled the appearance illus-` trated at No. 5.

In the several gures, A is the frame of the machine, in which are mounted all the working parts. B is the main driving-shaft, to which power and motion are imparted through the medium of a pulley, C, and driving-belt, from any suitable motor in the usual manner. On one end of shaft B is a driving-pinion, D,vwhich engages with a large spur-gear, E, which is keyed on a shaft, F, that is mounted on suitable `bearingboxes about the middle of the frame of the machine, and which carries a large drum or cylinder, Gr, which receives on its external face 4and carries along the material to be operated on, as will be presently explained. p H is thefeed-table, on which the partially-formed sacks are placed, and from which they are fed into the machine by the operative or attendant, after the fashion of feeding a printing-press.` a a are stop-fingers or registers, against the lower bent ends of which the mouth end of the bag is placed by the attendbearing-boxes in the mam frame A, and which is driven by means of a spur-sector, e, which en-` gages with the main gear E in a manner to be -Vby means of a cam, h,

" B is secured the creaser and holder K, (the operation of which will be presently explained,) and a pulley, L,'from which passes a belt, l, to the pulley m, which latter,

together with pulley u, is fast on'(or part of) a sleeve or hollow shaft', o, that. turns freely on the shaft M, and on which is secured a frame, N, which carries the counter or short shaft O. The shaft M is mounted in suitable bearings in the frame A, and is periodi'c'ally rocked or oscillated through the medium of crank p and rod g, by acam, 3P,'on the shaft F, and on the shaft O are "mounted four paste-wheels, l 2 3 4, which are kept-supplied, (in any suitable manner from a reservoir not shown,) and from the peripheries of which paste is supplied to the bagbottom. Q Q'aie holder-fingers or dogs, which clasp or hold the mouth end of the bag securely on the face of the "drum or ycarrier Gr. They work back and forth in slots in the face of said drum, and are operated by means'and in the manner I will now explain, viz.:V said fingers are fast on a rock-shaft, r, which is mounted in suitable boxes, as seen in the internal facefof the rim of drum G; and on one en'd of said shaft is secured a shoe piece, s, lfrom which Aextends a rod, t, provided with a spiral spring, u, and passing through a sta-nd, @,{see Fig. 5,) and soar-ran ged that the tendency of said spring-rod attachment is to `hold the shoe pieces in Veither ofthe two positions in which it may be placed, (these two positions being those which the rock-shaft r assumes when the 1in gers Q are either 'drawn in or thrown out to clasp the bag.) This shoe-piece s is formed with two cam-like depressions, in which work alternately (as said shoe travels around with. the carrier-drum or cylinder) two rolls or caster- Vwheels, 5 and 6, which are mounted in little stands, R, that are bolted to and project from the main frame A, as seen; and as the shoe piece s travels along a-nd is struck by first one and then the other of the wheels 5 and 6, it is oscillated in :first one and then the other direction, and so rocks the shaft as to lalternately throw the said fingers out to clasp and carry in a bag, and to release Ait when finished and passing to the discharging mechanism. rlhe pulleys A B',

mounted Von shafts C D', as shown, with the `cords or bands passing `around them, as seen, discharge the nished bags under the table, on which the attendant places the work' to be fed are the folding-arms or blades tothemachine a whiChtTast-fmaofthebagtoaom. They,

like the holding-iingers, are protruded through the face ofthe cylinder or drum, and are Worked 4 from a rock-shaft by mechanism, and in a manner similar to that just described, in connection with said ngers Q, the only difference in their.

in the bag-bottom. sweeps, whichV gather up and fold over the stock 'means of a cam`plate, F',

operations being that while the fingers Q are short, and are so arranged that their extreme ends only protrude and clasp the edge ofthe mouth ofthe bag, the blades a are long, and so arranged that their axes of motion shall be about coincident with the line in which is made the fold b b are folding-arms or' to form the iirst fold made in the bottom-formin g operation of the machine. lhey are mounted on short shafts or studs, c', that turnin stands secured to the rim of the drum, and which are provided with pinions d. which mesh into sectors'e. These sectors are each provided with an arm, f', (see Fig.A 6,) and to these arms is a bar, g', which is held in one direction by a spring1/, and is forced at intervals in the opposite direction by which presses against a roll or caster, i', in the end of said bar g; and by the alternate movements endwise of the said bar in opposite directions the sectors e are worked, and from them, through the medium of pinions d, the folders b b are operated.

After what has been said lof the detailed con'- struction and operation of parts, explanation of the general operation of 'the machine will be readily understood: Motive power being applied to the main shaft and the machine put in motion, the prepared stock or partiallyformed bags, in the condition seen at diagram No. 1, are fed from the table (with their mouths or open ends toward the machine) against the stop-fingers a a, and there allowed by the attendant to rest until the feed-ngers comel along and carry each bag along on the face of the drum or cylinder Gr. When arrived at the proper position, the paster I comes in contact with the material and puts acoating of paste along the edge at p, (see diagram 2,) and then the pastewheels l 2 3 4 move up and apply the paste in four lines, as seen at p2, diagram 2. As the'bag is carried on, the edge of creaser K comes up and indents the material at the line a: a', diagram 3, while at the same time the folders b b ygather up and fold over the stock, as shown at diagram No.

A 3. And as the bag further progresses with the drum G, the creaser I" comes up and indents the material at y y, and holds it while the-folders a come out, and, folding the stock `over into the shape seen at diagram No.4, complete-the bag, which passes on and is cords b `b and wheels Al D in a finished state.-

When the bag with its folded bottomthus pasted and folded is' openedo'ut or filled, it presents about the shape seenat diagram No. 5.

-It will be seen that by applying' the paste as shown there is no danger of any of the bottom portions getting stuck to those portions of the sides which have necessarily to rest in contact with the inner surfaces of the bottom parts while the latter are being pasted and folded. In conclusion, I would state I do not -limit myself to the precise details of construction herein shown and described, as the same may in some respects. be varied without departure from the principle of my invention; but Y Having fully described my new ymachine-for the following,

discharged between theV pasting and folding the bottoms of bags, what I which the blank is held, the creaser K for creasing or indenting the blank, and the folders b orV their equivalents, arranged substantially as described, to fold over'the paper so creased in a direction contrary to' that in which the blank is moving in order to make the first fold.

3. In combination with the drum or carrier, on

which the blank is held, the creaser Il and the folders a', or their equivalents, arranged substantially as described to fold the paper in order to make the second fold in the direction in which i the blank moves.

4. The combination of the drum or carrier for the blank, the pasting and folding mechanisms, and the creasers, when arranged and operating substantially in the manner shown and described.

5. The rotary paste-wheels, when arranged to automatically move up to and away from the carrier or sacksupporting surface, in combination with the automatically vibratory pastel' and the moving carrier or bed, the whole arranged to operate as described.

In witness whereof I have hereunto set my hand and seal this 8th day of March, 1871.

v J AMES4 ARKELL. [L. s.] Witnesses:

J. N. MCINTIRE,

E. I. DELBEL. (109) 

